Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000mnras.313..617l&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 313, Issue 3, pp. 617-626.
Astronomy and Astrophysics
Astronomy
9
Galaxies: Clusters: Individual: 3C 129, Cooling Flows, X-Rays: Galaxies
Scientific paper
The cluster 3C 129 is classified as a rich cluster. An analysis of the properties of the cluster 3C 129 from ROSAT PSPC and HRI, Einstein IPC, and EXOSAT ME observations is presented. The mean temperature from a joint fit of the ROSAT PSPC and EXOSAT ME data is 5.5(+/-0.2)keV. The luminosity is 0.6x1044ergs-1 in 0.2-2.4keV and 2.7x1044ergs-1 in 0.2-10keV. We find a cooling flow with a rate of ~84Msolaryr-1. The central gas density is 6x10-3cm-3, and the ICM mass is 3.6x1013Msolar. The total cluster mass is ~5x1014Msolar. The X-ray morphology shows an east-west elongation, which is evidence for a recent merger event. The radio source 3C 129.1 is located near the X-ray centre. Another cluster member galaxy (the radio galaxy 3C 129) is a prototype of head-tailed radio galaxies, and is located in the west part of the cluster. The tail points along the gradient of intracluster gas pressure. There are no significant point X-ray sources associated with the AGNs of the two radio galaxies.
Leahy Denis A.
Yin Donghui
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